Lee Jihyo is a senior in college and a member of the Crescent Moon pack. One day, her mother calls with good news: she's met a new man after her husband - her true mate - died. Jihyo goes home to meet her mother's new boyfriend, where she finds out that he's part of a rival pack, the Shadow Pack. Even worse, Jihyo is hit with a powerful smell when she gets to the pack lands- her own fated mate. With a boyfriend back at college, Jihyo runs in panic, only to find out that fated mate was not only her soon-to-be-stepbrother, Sunwoo... but he's also the Shadow Pack's alpha. And he isn't taking no for an answer.